from math import sqrt
def add(x, y):
    return x+y
def reduction(x, y):
    return x-y
def mul(x, y):
    return x*y
def div(x, y):
    return x/y
def ali(x, y):
    return x//y
def tak(x, y):
    return x%y
def pow(x, y):
    return x**y
print(sqrt(9))
print(add(1, 2),  reduction(8, 6),  mul(1, 2),  div(9, 3),  ali(10, 8),  tak(5, 4), pow(4, 5))